Localized cooling apparatus

Details Localized cooling apparatus Localized cooling apparatus

A - Human Necessities

61

F

62/1

A61F 7/00 (2006.01)

Patent

CA 1282602

LOCALIZED COOLING APPARATUS ABSTRACT The flexible cooling fabric has an injector that is flat so that it can be main-tained unobtrusively within the cooling fabric. The injector has a flat electromag- netic coil which surrounds an injection chamber. The chamber receives pressurized fluid, but a spring-biased plunger closes the outlet openings to the chamber. The fluid of the electromagnetic coil tends to center the plunger within the chamber to uncover the outlet openings, and the fluid flows toward a membrane which is against the skin or other object to be cooled. The refrigerant gas boils due to the heatflux from the skin, and this results in rapid and efficient cooling. The presentinvention also includes a system for recycling spent refrigerant gas. The gas iscollected in a volume absorber, and only when the volume inside of the absorber reaches a predetermined maximum does the compressor operate to relieve the pres-sure in the volume absorber by compressing the spent gas and injecting it back into the storage tank. The compressor operates efficiently because it only runs intermit- tently when the pressure in the volume absorber is above predetermined limits, but the tank continues to supply refrigerant to the injector when the compressor is not operating.

506497

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